1. On qemux86-64, set corei7-64 to instaed of core2-64
diff --git a/meta/conf/machine/qemux86-64.conf b/meta/conf/machine/qemux86-64.conf
index 489194a..080ca79 100644
--- a/meta/conf/machine/qemux86-64.conf
+++ b/meta/conf/machine/qemux86-64.conf
@@ -8,8 +8,8 @@ PREFERRED_PROVIDER_virtual/libgles1 ?= "mesa"
 PREFERRED_PROVIDER_virtual/libgles2 ?= "mesa"
 
 require conf/machine/include/qemu.inc
-DEFAULTTUNE ?= "core2-64"
-require conf/machine/include/tune-core2.inc
+DEFAULTTUNE ?= "corei7-64"
+require conf/machine/include/tune-corei7.inc
 
 KERNEL_IMAGETYPE = "bzImage"

diff --git a/scripts/runqemu-internal b/scripts/runqemu-internal
index 3b0e54c..1543f94 100755
--- a/scripts/runqemu-internal
+++ b/scripts/runqemu-internal
@@ -442,7 +442,7 @@ if [ "$MACHINE" = "qemux86-64" ]; then
     if [ "$KVM_ACTIVE" = "yes" ]; then
         CPU_SUBTYPE=kvm64
     else
-        CPU_SUBTYPE=core2duo
+        CPU_SUBTYPE=Nehalem
     fi
     if [ ! -z "$vga_option" ]; then
         QEMU_UI_OPTIONS="$QEMU_UI_OPTIONS"

2. Make use of service in meta-skeleton to do the test
diff --git a/meta-skeleton/recipes-skeleton/service/service/skeleton_test.c b/meta-skeleton/recipes-skeleton/service/service/skeleton_test.c
index 96c67ac..a338b20 100644
--- a/meta-skeleton/recipes-skeleton/service/service/skeleton_test.c
+++ b/meta-skeleton/recipes-skeleton/service/service/skeleton_test.c
@@ -1,12 +1,32 @@
-#include <unistd.h>
-
-/* This demo does nothing except for testing /etc/init.d/skeleton */
-
-int main(int argc, char *argv[])
-{
-       daemon(0, 0);
-       while (1) {
-               sleep(1);
-       }
-       return 0;
-}
+#include <stdio.h> 
+#include <string.h> 
+
+int main(int argc, char *argv[]) 
+{ 
+    char hex_digest[44]; 
+    char digest[20] = {0xc4, 0xf9, 0x37, 0x5f, 0x98, 
+                       0x34, 0xb4, 0xe7, 0xf0, 0xa5, 
+                       0x28, 0xcc, 0x65, 0xc0, 0x55, 
+                       0x70, 0x2b, 0xf5, 0xf2, 0x4a}; 
+    unsigned int i, j, digest_size = 20; 
+
+    /* Make hex version of the digest: correct in qemu */ 
+    memset(hex_digest, 0, sizeof(hex_digest)); 
+    for (i=0; i<digest_size; i++) 
+        sprintf(hex_digest+i*2, "%x", digest[i]&0xFF); 
+    printf("hex_digest %s\n", hex_digest); 
+
+    /* Make hex version of the digest: incorrect in qemu */ 
+    memset(hex_digest, 0, sizeof(hex_digest)); 
+    for(i=j=0; i<digest_size; i++) { 
+        char c; 
+        c = (digest[i] >> 4) & 0xf; 
+        c = (c>9) ? c+'a'-10 : c + '0'; 
+        hex_digest[j++] = c; 
+        c = (digest[i] & 0xf); 
+        c = (c>9) ? c+'a'-10 : c + '0'; 
+        hex_digest[j++] = c; 
+    } 
+    printf("hex_digest %s\n", hex_digest); 
+} 
+
diff --git a/meta-skeleton/recipes-skeleton/service/service_0.1.bb b/meta-skeleton/recipes-skeleton/service/service_0.1.bb
index c5cd7a9..e00f033 100644
--- a/meta-skeleton/recipes-skeleton/service/service_0.1.bb
+++ b/meta-skeleton/recipes-skeleton/service/service_0.1.bb
@@ -9,7 +9,7 @@ SRC_URI = "file://skeleton \
           "
 
 do_compile () {
-       ${CC} ${WORKDIR}/skeleton_test.c -o ${WORKDIR}/skeleton-test
+       ${CC} -O3 ${WORKDIR}/skeleton_test.c -o ${WORKDIR}/skeleton-test
 }
 
 do_install () {


3. $ Add service to image
In bblayers.conf
...
BBLAYERS ?= " \ 
  /buildarea/raid0/hjia/poky/meta \
  /buildarea/raid0/hjia/poky/meta-yocto \
  /buildarea/raid0/hjia/poky/meta-skeleton \
  /buildarea/raid0/hjia/poky/meta-yocto-bsp \
  "
...

In local.conf
...
MACHINE ?= "qemux86-64"
IMAGE_INSTALL_append = " service"
...

bitbake core-image-minimal

4. Run qemu and invoke service
runqemu qemux86-64 nographic

root@qemux86-64:~# skeleton-test 
hex_digest c4f9375f9834b4e7f0a528cc65c055702bf5f24a
hex_digest c4f9375f9834b4e7f005080c050005002bf5f24a

The two hex_digest outputs should be same, but it is not on qemux86-64 with corei7-64

//Hongxu